Initial commit: LeadFlow lead generation platform

Full-stack Next.js 16 app with three scraping pipelines:
- AirScale CSV → Anymailfinder Bulk Decision Maker search
- LinkedIn Sales Navigator → Vayne → Anymailfinder email enrichment
- Apify Google SERP → domain extraction → Anymailfinder bulk enrichment

Includes Docker multi-stage build + docker-compose for Coolify deployment.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/api/credentials/route.ts

@@ -0,0 +1,51 @@
+import { NextRequest, NextResponse } from "next/server";
+import { prisma } from "@/lib/db";
+import { encrypt, decrypt } from "@/lib/utils/encryption";
+
+const SERVICES = ["anymailfinder", "apify", "vayne", "airscale"] as const;
+
+export async function GET() {
+  try {
+    const creds = await prisma.apiCredential.findMany();
+    const result: Record<string, boolean> = {};
+    for (const svc of SERVICES) {
+      result[svc] = creds.some(c => c.service === svc && c.value);
+    }
+    return NextResponse.json(result);
+  } catch (err) {
+    console.error("GET /api/credentials error:", err);
+    return NextResponse.json({ anymailfinder: false, apify: false, vayne: false, airscale: false });
+  }
+}
+
+export async function POST(req: NextRequest) {
+  try {
+    const body = await req.json() as Record<string, string>;
+    for (const [service, value] of Object.entries(body)) {
+      if (!SERVICES.includes(service as typeof SERVICES[number])) continue;
+      if (value === null || value === undefined) continue;
+      await prisma.apiCredential.upsert({
+        where: { service },
+        create: { service, value: value ? encrypt(value) : "" },
+        update: { value: value ? encrypt(value) : "" },
+      });
+    }
+    return NextResponse.json({ ok: true });
+  } catch (err) {
+    console.error("POST /api/credentials error:", err);
+    return NextResponse.json({ error: "Failed to save credentials" }, { status: 500 });
+  }
+}
+
+// GET a specific decrypted value (for internal API use only)
+export async function PUT(req: NextRequest) {
+  try {
+    const { service } = await req.json() as { service: string };
+    const cred = await prisma.apiCredential.findUnique({ where: { service } });
+    if (!cred) return NextResponse.json({ value: null });
+    return NextResponse.json({ value: decrypt(cred.value) });
+  } catch (err) {
+    console.error("PUT /api/credentials error:", err);
+    return NextResponse.json({ error: "Failed" }, { status: 500 });
+  }
+}